HARRISBURG — Gov. Tom Wolf, who replaced the chairman of Philadelphia’s School Reform Commission partly because of his support for additional charter schools in the cash-strapped city, will discuss his plan for charter reform in today’s budget address.

The Democrat “will discuss greater charter oversight in his budget,” spokesman Jeff Sheridan said Monday of Wolf’s scheduled speech before a joint session of the Legislature.

Wolf made headlines Sunday night when he confirmed he was replacing commission chairman Bill Green with commissioner Marjorie Neff, a former principal with 40 years’ experience who Wolf says shares his vision for the 200,000-student district.

Sheridan said there were multiple reasons for the shake-up, but the governor was disappointed by Green’s support for more privately run and publicly financed charter schools after Wolf had emphasized that he opposed any new charters because of the district’s dire financial situation.

“The district was forced to make major cutbacks in transportation, security, and janitorial services just to open on time last year,” Wolf said in a statement Sunday. “We must make new investments in education and provide a fresh path forward for Philadelphia’s schools.”

The commission has governed the district in place of a school board since 2001 under a law passed in response to the district’s perennial money troubles. The governor appoints three members, the mayor two.

Green said Monday he intends to mount a court challenge to Wolf’s authority to remove him as chairman. A Democrat appointed to the commission by Republican Gov. Tom Corbett last year, Green will remain one of the five commissioners.

“I think it’s very important to establish that the chairman of the SRC can act and vote his conscience without fear from political influence,” he said.